Add DOI to README and page footer

README.md

@@ -12,6 +12,8 @@ short_description: Rare external truth before calibration collapses
 
 # Thin Channel — interactive demo
 
+[![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.21845022.svg)](https://doi.org/10.5281/zenodo.21845022)
+
 Interactive visualization of Experiment 6 (`exp6-forecast-calibration`) of the
 [Second Loop](https://github.com/SergheiBrinza/thin-channel) project.
 

index.html

@@ -332,6 +332,7 @@ input[type=range].lever-input:focus-visible::-moz-range-thumb{box-shadow:0 0 0 4
       <a id="repo-link" href="https://github.com/SergheiBrinza/thin-channel" target="_blank" rel="noopener">github.com/SergheiBrinza/thin-channel</a>.
     </div>
     <div class="attrib" id="attrib">
+      Paper: <a href="https://doi.org/10.5281/zenodo.21845022" target="_blank" rel="noopener">doi.org/10.5281/zenodo.21845022</a>.
       Dataset: ForecastBench (Karger, Bastani, Yueh-Han, Jacobs, Halawi, Zhang &amp; Tetlock,
       <i>ForecastBench: A Dynamic Benchmark of AI Forecasting Capabilities</i>, ICLR 2025,
       arXiv:2409.19839), licensed CC BY-SA 4.0 — source: